Two companies are now trying to apply Near field communication technology to the diamond industry. Thinfilm, which prints NFC tags, and Sarine Technologies, which develops technologies for diamonds and gemstones, are partnering to bring NFC to the precious stones. . A diamond customer would bring a smartphone close to a printed NFC tag to pull up the diamond’s profile. The NFC tags will be printed on paper sold with diamonds wholesale or eventually on tags attached to rings in stores.